Add google.protobuf.runtime_version

stubs/protobuf/google/protobuf/runtime_version.pyi

@@ -0,0 +1,23 @@
+from enum import Enum
+from typing import Final, Literal
+
+class Domain(Enum):
+    GOOGLE_INTERNAL = 1
+    PUBLIC = 2
+
+OSS_DOMAIN: Final[Literal[Domain.PUBLIC]]
+OSS_MAJOR: Final = 5
+OSS_MINOR: Final = 28
+OSS_PATCH: Final = 3
+OSS_SUFFIX: Final = ""
+DOMAIN: Final[Literal[Domain.PUBLIC]]
+MAJOR: Final = OSS_MAJOR
+MINOR: Final = OSS_MINOR
+PATCH: Final = OSS_PATCH
+SUFFIX: Final = OSS_SUFFIX
+
+class VersionError(Exception): ...
+
+def ValidateProtobufRuntimeVersion(
+    gen_domain: Domain, gen_major: int, gen_minor: int, gen_patch: int, gen_suffix: str, location: str
+) -> None: ...